If gene replacement therapy became available
a. it would not work for humans because we have too many chromosomes.
b. it would involve a surgical technique that separates chromosomes that have failed to
segregate properly during meiosis II.
c. it could be used to treat victims of a recessive disease by removing the dominant damaging
autosomal allele and replacing it with a harmless one.
d. it would replace defective alleles with normal ones.
e. it would remove entire chromosomes from cells and repair the defective genes.
D
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The genus of bacteria that is able to fix nitrogen and form heterocysts is
A. Pseudomonas. B. Escherichia. C. Vibrio. D. Anabaena.
_____ is defined as a decrease in the response to an ongoing stimulus
a. Perception c. Sensory adaptation b. Visual accommodation d. Somatic sensation
The letter “A” in the above figure represents
a. ground tissue. b. dermal tissue. c. vascular tissue. d. apical meristem. e. shoot root combination.
Discuss the difference between Bacillus and bacilli, and the difference between Streptococcus and streptococci.
What will be an ideal response?